package com.cskaoyan.anno;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)//这个注解写在什么地方
@Retention(RetentionPolicy.RUNTIME)//运行时生效
public @interface SayHello {
}
